CN113376860A - Stereoscopic display device - Google Patents
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- CN113376860A CN113376860A CN202110699717.XA CN202110699717A CN113376860A CN 113376860 A CN113376860 A CN 113376860A CN 202110699717 A CN202110699717 A CN 202110699717A CN 113376860 A CN113376860 A CN 113376860A
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- 230000000694 effects Effects 0.000 abstract description 11
- 210000001508 eye Anatomy 0.000 description 137
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- G—PHYSICS
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
- G02B30/27—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving lenticular arrays
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/0093—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 with means for monitoring data relating to the user, e.g. head-tracking, eye-tracking
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
- G02B30/30—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving parallax barriers
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Abstract
The embodiment of the invention discloses a stereoscopic display device, which comprises: the device comprises a display module, an eye tracking module and a calculation module; the human eye tracking module is used for acquiring human eye position information; the computing module is respectively in communication connection with the human eye tracking module and the display module and is used for receiving the human eye position information and determining a display visual field according to the human eye position information and the position information of the display module; the calculation module is also used for determining emergent information of the display module according to the display vision field; the display module is used for emitting according to the emitting information. The embodiment of the invention reasonably sets the number of the display vision fields by ensuring a large viewing angle without being limited by a single viewing distance, thereby ensuring the display effect of the stereoscopic image.
Description
Technical Field
The embodiment of the invention relates to the field of display, in particular to a stereoscopic display device.
Background
In the prior art, autostereoscopic displays use one-dimensional or two-dimensional parallax barriers or lens arrays to produce more than two views. The viewer watches the image in the vision field range, so that the viewer has better viewing experience, but once the viewer leaves the vision field range, the quality of the watched image is rapidly reduced, the image is seriously distorted, and even the images of the left eye and the right eye are reversed, so that the viewer has uncomfortable feelings of dizziness. The conventional solution is to increase the number of viewing zones to increase the range in which the correct image can be seen, thereby increasing the space for viewing the correct image. The disadvantage of increasing the number of viewing zones is that the resolution of the stereoscopic image drops sharply to 1/N of the screen resolution, where N is the number of viewing zones, resulting in a reduction in the quality of the image viewed by the viewer. If the designed viewing angle range is 50 ° and each viewing zone is 1 °, 50 viewing zones are required, and the resolution of the stereoscopic image is only 1/50. In addition, the viewer cannot move freely, and must be fixed at a specific design distance of the display to view the correct image.
Disclosure of Invention
The embodiment of the invention provides a stereoscopic display device, which can reasonably set the number of display vision fields and ensure the display effect of stereoscopic images by ensuring a large viewing angle and not being limited by a single viewing distance.
To achieve the above object, an embodiment of the present invention provides a stereoscopic display device, including: the device comprises a display module, an eye tracking module and a calculation module;
the human eye tracking module is used for acquiring human eye position information;
the calculation module is respectively in communication connection with the eye tracking module and the display module, and is used for receiving the eye position information and determining a display visual field according to the eye position information and the position information of the display module; the display views comprise left eye display views and right eye display views, the left eye display views comprise at least a left eye primary view, a first left eye auxiliary view and a second left eye auxiliary view, and the right eye display views comprise at least a right eye primary view, a first right eye auxiliary view and a second right eye auxiliary view; in a first direction, the first left-eye auxiliary view and the second left-eye auxiliary view are respectively located on both sides of the left-eye main view, and the first right-eye auxiliary view and the second right-eye auxiliary view are respectively located on both sides of the right-eye main view; the first direction is parallel to a direction in which the left eye points to the right eye;
the computing module is further configured to determine the emergence information of the display module according to the display view;
the display module is used for emitting according to the emitting information.
Optionally, the left-eye display views include a left-eye main view, a first left-eye auxiliary view, and a second left-eye auxiliary view, and the emergent information corresponding to the left-eye main view, the first left-eye auxiliary view, and the second left-eye auxiliary view is the same;
the right-eye display visual field comprises a right-eye main visual field, a first right-eye auxiliary visual field and a second right-eye auxiliary visual field, and emergent information corresponding to the right-eye main visual field, the first right-eye auxiliary visual field and the second right-eye auxiliary visual field is the same.
Optionally, the display module includes a display and a light guide assembly, the light guide assembly is located at a light exit side of the display, and display information of the display exits through the light guide assembly;
the display comprises a plurality of display units, each of which comprises a plurality of display pixel groups;
the light guide assembly comprises a plurality of light guide elements, the light guide elements correspond to the display units one by one, and the vertical projection of the light guide elements on the plane of the display is at least partially overlapped with the display units;
the computing module is used for determining display information of the display unit according to the display visual field; in the same view field, the display information of different display units is different.
Optionally, along the first direction, an extension size of the light guide element is the same as an extension size of the display unit corresponding to the light guide element.
Optionally, the display module includes a display and a light guide assembly, the light guide assembly is located at a light exit side of the display, and display information of the display exits through the light guide assembly;
the display comprises a plurality of display units, each of which comprises a plurality of display pixel groups;
the light guide assembly comprises a plurality of light guide elements, the light guide elements correspond to the display units one by one, and the vertical projection of the light guide elements on the plane of the display is at least partially overlapped with the display units;
the calculation module is configured to determine, according to the display view, an extension size of the light guide element in the first direction, where, in the same view, the extension sizes of the light guide elements corresponding to different display units in the first direction are different.
Optionally, a vertical projection of the light guide element on a plane where the display is located within a coverage of the display unit.
Optionally, along the first direction, the extension dimension width b of the light guide element satisfies:
wherein n is the number of display pixel groups included in the first direction by the display unit corresponding to the light guide element; p is the extension size of the display pixel group in the first direction; v is a width of each of the display views in the first direction.
Optionally, a distance g between the light emitting surface of the display and the light guiding element satisfies:
wherein p is an extension of the display pixel group in the first direction; d is the distance between the lens center of the light guide element and the position of human eyes in a second direction, and the second direction is vertical to the light-emitting surface of the display; v is a width of each of the display views in the first direction; n ismIs the refractive index of the light guiding element.
Optionally, the light guide element includes a lenticular lens or a parallax barrier.
Optionally, the width of each display viewing area along the first direction is 20mm-25 mm.
The present invention provides a stereoscopic display device, including: the device comprises a display module, an eye tracking module and a calculation module. The human eye tracking module is used for acquiring human eye position information; the computing module is respectively in communication connection with the human eye tracking module and the display module and is used for receiving the human eye position information and determining a display visual field according to the human eye position information and the position information of the display module; the display views comprise left eye display views and right eye display views, the left eye display views at least comprise a left eye main view, a first left eye auxiliary view and a second left eye auxiliary view, and the right eye display views at least comprise a right eye main view, a first right eye auxiliary view and a second right eye auxiliary view; along a first direction, the first left-eye auxiliary view field and the second left-eye auxiliary view field are respectively positioned at two sides of the left-eye main view field, and the first right-eye auxiliary view field and the second right-eye auxiliary view field are respectively positioned at two sides of the right-eye main view field; the first direction is parallel to the direction in which the left eye points to the right eye; the calculation module is also used for determining emergent information of the display module according to the display vision field; the display module is used for emitting according to the emitting information. Adopt the people's eye to track the module and gather people's eye position information, combine calculation module to confirm display module's emergent information, guarantee the big visual angle of watching, do not receive under the prerequisite of single viewing distance restriction, rationally set up the quantity that shows the visual field, guarantee stereoscopic image's display effect, guarantee stereoscopic image's resolution ratio.
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To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description will be given below of the drawings required for the embodiments or the technical solutions in the prior art, and it is obvious that the drawings in the following description, although being some specific embodiments of the present invention, can be extended and extended to other structures and drawings by those skilled in the art according to the basic concepts of the device structure, the driving method and the manufacturing method disclosed and suggested by the various embodiments of the present invention, without making sure that these should be within the scope of the claims of the present invention.
Fig. 1 is a schematic structural diagram of a stereoscopic display device according to an embodiment of the invention;
fig. 2 is a schematic diagram of a stereoscopic display device according to an embodiment of the invention;
fig. 3 is a schematic diagram of another stereoscopic display apparatus according to an embodiment of the invention;
fig. 4 is a schematic diagram of another stereoscopic display apparatus according to an embodiment of the invention;
fig. 5 is a schematic diagram of another stereoscopic display apparatus according to an embodiment of the invention;
fig. 6 is a schematic diagram of another stereoscopic display apparatus according to an embodiment of the invention;
fig. 7 is a schematic diagram of another stereoscopic display device according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described through embodiments with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the basic idea disclosed and suggested by the embodiments of the present invention, are within the scope of the present invention.
Fig. 1 is a schematic structural diagram of a stereoscopic display device according to an embodiment of the present invention, where the stereoscopic display device shown in fig. 1 includes: a display module 101, a human eye tracking module 102 and a calculation module 103. The eye tracking module 102 is used for collecting eye position information. The computing module 103 is in communication connection with the human eye tracking module 102 and the display module 101, respectively, and is configured to receive the human eye position information and determine a display view according to the human eye position information and the position information of the display module 101. Fig. 2 is a schematic diagram of a stereoscopic display device according to an embodiment of the present invention, exemplarily illustrating six views, one of the display information emitted from the display module 101, as shown in fig. 2, the display views includes a left-eye display view 110 and a right-eye display view 120, the left-eye display view 110 includes at least a left-eye main view 111, a first left-eye auxiliary view 112 and a second left-eye auxiliary view 113, and the right-eye display view 120 includes at least a right-eye main view 121, a first right-eye auxiliary view 122 and a second right-eye auxiliary view 123. In the first direction, the first left-eye auxiliary view 112 and the second left-eye auxiliary view 113 are respectively located on both sides of the left-eye main view 111, and the first right-eye auxiliary view 122 and the second right-eye auxiliary view 123 are respectively located on both sides of the right-eye main view; the first direction is parallel to a direction in which the left eye is directed to the right eye.
The calculation module 103 is further configured to determine the emergence information of the display module 101 according to the display view;
the display module 101 is used for emitting according to the emission information.
The eye tracking module 102 may employ various existing tracking systems, such as an eyeball tracking system or a head tracking system, and may successfully acquire the position information of the eyes of the viewer. According to the eye position information acquired by the eye tracking module 102, the calculation module 103 calculates the acquired eye position information by using an eye position information algorithm set in the calculation module, and determines the emergent information of the display module 101 by combining the position information of the display module 101. Under the condition that the viewer moves, the display information emitted by the display module 101 can be projected to the left eye and the right eye of the viewer in real time, and the viewer can still have good visual experience of the stereoscopic image in the moving process. The process that the human eye tracking module 102 collects the human eye position information and the display module 101 emits the display information is completed in at least 1/24 seconds, and the effect that 24 frames of human eyes look continuous is achieved.
As shown in fig. 2, the first direction, i.e. the X direction in the figure, is parallel to the direction in which the left eye points to the right eye, based on the eye tracking module 102, when the position information of the human eye is known, only the view of the position of the human eye needs to be kept when designing the display view, and the views in other angle ranges are redundant, so that the number of views can be reduced appropriately, and the resolution of the stereoscopic display can be ensured. In order to maintain the viewing effect of the viewer, the number of viewing zones includes at least six, and the display effect of the stereoscopic image is the best. The left-eye display view 110 includes a left-eye main view 111, a first left-eye auxiliary view 112, and a second left-eye auxiliary view 113. In the first direction, the first left-eye auxiliary view 112 and the second left-eye auxiliary view 113 are respectively located on both sides of the left-eye main view 111. The left-eye main view 111, the first left-eye auxiliary view 112, and the second left-eye auxiliary view 113 may display the same or different display information. The right-eye display view 120 includes a right-eye main view 121, a first right-eye auxiliary view 122, and a second right-eye auxiliary view 123. In the first direction, the first right-eye auxiliary viewing area 122 and the second right-eye auxiliary viewing area 123 are respectively located on both sides of the right-eye main viewing area 121. The right-eye main view area 121, the first right-eye auxiliary view area 122, and the second right-eye auxiliary view area 123 may display the same or less different display information. During the moving process, if the left eye of the human eye moves from the left-eye main viewing area 111 to the first left-eye auxiliary viewing area 112 or the second left-eye auxiliary viewing area 113, the right eye of the human eye moves from the right-eye main viewing area 121 to the first right-eye auxiliary viewing area 122 or the second right-eye auxiliary viewing area 123, so as to effectively prevent the viewer from entering the wrong viewing area and seeing the wrong image during the moving process.
According to the technical scheme, the human eye tracking module is used for collecting the human eye position information, the calculation module is used for determining the emergent information according to the human eye position information, the display module is used for emitting the display information according to the emergent information, and the display module, the human eye tracking module and the calculation module are matched with each other, so that the large visual angle and the three-dimensional display effect can be still kept in the moving process of a viewer.
Optionally, the left-eye display view 110 includes a left-eye main view 111, a first left-eye auxiliary view 112, and a second left-eye auxiliary view 113, and the emergent information of the left-eye main view 111, the first left-eye auxiliary view 112, and the second left-eye auxiliary view 113 is the same; the right-eye display viewing area 120 includes a right-eye main viewing area 121, a first right-eye auxiliary viewing area 122, and a second right-eye auxiliary viewing area 123, and the emission information corresponding to the right-eye main viewing area 111, the first right-eye auxiliary viewing area 122, and the second right-eye auxiliary viewing area 123 is the same.
As shown in fig. 2, the display views are divided into a left-eye display view 110 and a right-eye display view 120, and the stereoscopic images viewed by the left and right eyes of the human eye are divided into a left-eye display view and a right-eye display view for display, and the two display views are spaced apart from each other, so that the degree of crosstalk between the stereoscopic images viewed by the left and right eyes of the human eye is greatly reduced. The display unit in fig. 2 is only exemplarily shown to include twenty-four display pixel groups in one dimension, but actually, the display module may include many display pixel groups in two dimensions, and the display unit in fig. 2 is divided into six display pixel groups of P1, P2, P3, P4, P5, and P6 for implementing stereoscopic display, and each of the six display pixel groups is periodically arranged for emitting display information. The left-eye display viewing area 110 includes a left-eye main viewing area 111, a first left-eye auxiliary viewing area 112, and a second left-eye auxiliary viewing area 113, and the display pixel groups P4, P5, and P6 in the display module 101 corresponding to the left-eye display viewing area are configured to emit the same display information, so that the emission information corresponding to the left-eye main viewing area 111, the first left-eye auxiliary viewing area 112, and the second left-eye auxiliary viewing area 113 is ensured to be the same. The right-eye display viewing area 120 includes a right-eye main viewing area 121, a first right-eye auxiliary viewing area 122, and a second right-eye auxiliary viewing area 123, and the display pixel groups P1, P2, and P in the display module 101 corresponding to the right-eye display viewing area are set to emit the same display information, so that the emission information corresponding to the right-eye main viewing area 121, the first right-eye auxiliary viewing area 122, and the second right-eye auxiliary viewing area 123 is ensured to be the same. Since the outgoing information displayed by the left-eye main viewing area 111, the first left-eye auxiliary viewing area 112 and the second left-eye auxiliary viewing area 11 is the same, and the outgoing information displayed by the right-eye main viewing area 121, the first right-eye auxiliary viewing area 122 and the second right-eye auxiliary viewing area 123 is the same, the left eye of the viewer moves in the left-eye display viewing area range, and the right eye of the viewer moves in the right-eye display viewing area range, so that the viewer can see normal stereoscopic images, and the viewer has better viewing experience.
Fig. 3 is a schematic diagram of another stereoscopic display device according to an embodiment of the invention. As shown in fig. 3, compared to fig. 2, the left and right eyes of the human eye move a certain distance in the reverse direction of the first direction, the display module 101 obtains new outgoing information according to the collection and calculation of the position information of the human eye by the human eye tracking module 102 and the calculation module 103, and the display module 101 emits new display information according to the new outgoing information, so that the left and right eyes of the human eye are still located in the correct viewing range, and the viewer is guaranteed to see the correct stereoscopic display effect. Fig. 4 is a schematic diagram of another stereoscopic display device according to an embodiment of the invention. If the left and right eyes of the human eye move a certain distance along the same direction of the first direction, the adjustment is performed in the same way as the above method, which is not described in detail herein.
Fig. 5 is a schematic diagram of another stereoscopic display device according to an embodiment of the invention, exemplarily illustrating six viewing zones, two display information beams emitted from the display module 101, as shown in fig. 5, when the left and right eyes of the human eye are far away from the display module 101, for the solid light beams, the left and right eyes of the human eye are respectively located in the left eye main viewing zone 111 and the right eye main viewing zone 121, and for the dotted light beams, the left and right eyes of the human eye are respectively located in the left eye main viewing zone 111 and the second right eye auxiliary viewing zone 123, since the display information corresponding to the left eye main viewing zone 111, the first left eye auxiliary viewing zone 112 and the second left eye auxiliary viewing zone 113 are the same; the display information corresponding to the right-eye main viewing area 121, the first right-eye auxiliary viewing area 122, and the second right-eye auxiliary viewing area 123 is the same. At this time, the right and left eyes of the human eyes can see the correct stereoscopic image. Fig. 6 is a schematic diagram of another stereoscopic display device according to an embodiment of the invention, as shown in fig. 6, an exemplary view is shown, two display information beams are emitted from the display module 101, when the left and right eyes of the human eye approach the display module 101, the left and right eyes of the human eye are respectively located in the second left-eye auxiliary view 113 and the right-eye main view 121 for the solid-line light beam, and the left and right eyes of the human eye are respectively located in the left-eye main view 111 and the first right-eye auxiliary view 122 for the dotted-line light beam, which is similar to that shown in fig. 5, and then the right and left eyes of the human eye can both see correct stereoscopic images.
Referring to fig. 6, optionally, the display module includes a display 1011 and a light guide component 1012, the light guide component 1012 is located at the light exit side of the display 1011, and the display information of the display 1011 exits after passing through the light guide component 1012;
the display 1011 includes a plurality of display units 1013, each display unit 1031 including a plurality of display pixel groups;
the light guide assembly 1012 comprises a plurality of light guide elements 1014, the light guide elements 1014 correspond to the display units 1013 one to one, and the vertical projection of the light guide elements 1014 on the plane of the display 1011 at least partially overlaps the display unit 1031;
the calculation module is configured to determine display information of the display unit 1013 according to the display view; in the same view field, the display information of different display units is different.
Alternatively, in the first direction, the extension of the light guide element 1012 is the same as the extension of the display unit 1013 corresponding thereto.
Wherein the light guide element 1012 is used to divide the display visual field of the display information emitted from the display unit into six visual fields as shown in fig. 6, and since the extension size of the light guide element 1012 is the same as the extension size of the display unit 1013 corresponding thereto, the calculation module determines the display information emitted from the display unit 1013 according to the position information of the left and right eyes of the human eye collected by the human eye tracking module, the interval between the adjacent display units 1031 is not more than six display pixel groups, as shown in fig. 6, one display pixel group P1 is arranged between the adjacent display units 1031, the display pixel group P6 emitting the solid line light beam and the display pixel group P1 emitting the dotted line light beam both fall into the first right eye auxiliary visual field 122, the display pixel group P5 emitting the light beam and the display pixel group P6 emitting the dotted line light beam both fall into the first right eye auxiliary visual field 122, the display pixel group P4 emitting the solid line light beam and the display pixel group P5 emitting the dotted line light beam both fall into the first right eye auxiliary visual field 122, The display pixel group P3 emitting the solid-line light beam and the display pixel group P4 emitting the dashed-line light beam each fall into the first right-eye auxiliary viewing area 122, the display pixel group P2 emitting the solid-line light beam and the display pixel group P3 emitting the dashed-line light beam each fall into the first right-eye auxiliary viewing area 122, and the display pixel group P1 emitting the solid-line light beam and the display pixel group P2 emitting the dashed-line light beam each fall into the first right-eye auxiliary viewing area 122, and display information of different display units 1013 in the same viewing area is adjusted to be different, so that the right and left eyes of the viewer can see correct stereoscopic images.
Optionally, the display module includes a display 1011 and a light guide component 1012, the light guide component 1012 is located at a light exit side of the display 1011, and display information of the display 1011 exits through the light guide component 1012;
the display 1011 includes a plurality of display units 1013, each display unit 1013 including a plurality of display pixel groups;
the light guide assembly 1012 comprises a plurality of light guide elements 1014, the light guide elements 1014 correspond to the display units 1013 one to one, and the vertical projection of the light guide elements 1014 on the plane of the display 1011 at least partially overlaps the display units 1013;
the calculation module is configured to determine an extension size of the light guide element 1014 in the first direction according to a display field of view, where the extension sizes of the light guide elements 1014 corresponding to different display units in the first direction are different in the same field of view.
Optionally, the vertical projection of the light guiding element 1014 on the plane of the display 1011 is located within the coverage of the display unit 1013.
Fig. 7 is a schematic diagram illustrating another stereoscopic display device according to an embodiment of the present invention, as shown in fig. 7, a vertical projection of the light guide element 1014 on a plane where the display 1011 is located within a coverage of the display unit 1013, and an extension of the light guide element 1041 in the first direction is controlled, so that the same display information emitted from different display units 1013 can be located in the same view field along with movement of a viewer, thereby ensuring that the viewer can see a normal stereoscopic image.
Optionally, along the first direction, the extension dimension width b of the light guide element satisfies:
wherein n is the number of display pixel groups contained in the first direction by the display unit corresponding to the light guide element; p is the extension size of the display pixel group in the first direction; v is the width of each display field in the first direction.
The delay size p of the display pixel group in the first direction and the width v of each display view in the first direction are known values, and the extension size width b of the light guide element can be calculated according to the set value of n, so that after the display information emitted from the display unit 1013 is refracted and split by the light guide element 1014, the same display information emitted from the display unit 1013 is projected into the same view in different directions 2, and since the left and right eyes of the human eye are divided into the left-eye display view 110 and the right-eye display view 120, taking n equal to 6 as an example, the left-eye display view 110 includes a left-eye main view 111, a first left-eye auxiliary view 112 and a second left-eye auxiliary view 113; the right-eye display view 120 includes a right-eye main view 121, a first right-eye auxiliary view 122, and a second right-eye auxiliary view 123. Through the refraction and light splitting effects of the light guide element 1014, the display information correspondingly displayed by the left-eye main viewing area 111, the first left-eye auxiliary viewing area 112 and the second left-eye auxiliary viewing area 113 is the same, and the display information correspondingly displayed by the right-eye main viewing area 121, the first right-eye auxiliary viewing area 122 and the second right-eye auxiliary viewing area 123 is the same, so that a normal stereoscopic image which can be seen by both the left eye and the right eye in the left-eye and right-eye display viewing areas can be ensured in the moving process of a viewer.
Optionally, a distance g between the light emitting surface of the display and the light guiding element satisfies:
wherein p is the extension size of the display pixel group in the first direction; d is the distance between the lens center of the light guide element and the position of the human eyes in a second direction, and the second direction is vertical to the light-emitting surface of the display; v is the width of each display field in the first direction; n ismIs the refractive index of the light guiding element.
The distance d between the center of the lens of the light guide element and the position of the human eyes in the second direction can be designed according to actual design requirements, and is generally the designed optimal viewing distance. The extension p of the display pixel group in the first direction, the width v of each display viewing area in the first direction, and the refractive index n of the light guide elementmThe distance g between the light-emitting surface of the display and the light guide element can be calculated according to the formula when the optimal viewing distance d is designed, so that the display effect of the stereoscopic image is ensured.
Optionally, the light guide element comprises a lenticular lens or a parallax barrier.
Wherein, the light guide element comprises a cylindrical lens, and the cylindrical lens can comprise a cylindrical lens or a semi-cylindrical lens. The material of the lenticular lens is generally glass, plastic, etc., which plays a role of refracting and splitting light. The light guide element may be a gradient index lenticular lens array or a fresnel lenticular lens array. The light guide element may also be a parallax grating, the extending dimension width b of the parallax grating along the first direction may be set to be the same as that along the first direction when the light guide element is a cylindrical lens, and the opening position of the parallax grating is equivalent to the lens center position of the cylindrical lens. The parallax barrier controls the transmission state of light rays in the direction of the horizontal axis or the vertical axis, so that different images corresponding to the left eye and the right eye of a viewer can be obtained respectively in the left eye and the right eye of the viewer, and three-dimensional vision is generated.
Optionally, each display field has a width in the first direction of 20mm to 25 mm.
Wherein the width of each display viewing area can be set according to the distance between the left and right eyes of the human eyes. Generally, the distance between the left and right eyes of a human eye is 65mm, and six display views are provided to secure a viewing angle of at least 50 degrees or more, and in this case, the width of the display views is one third of the distance between the left and right eyes of the human eye, that is, the width of each display view is 21.67 mm. Due to the difference in the distance between the left and right eyes of the human eye, each display field is between 20mm and 25mm wide.
The invention provides a stereoscopic display device, which utilizes the mutual cooperation among a display module, an eye tracking module and a calculation module to ensure that the right and left eyes of the observer can observe correct stereoscopic images no matter the observer moves left and right or back and forth within the optimal observation distance range on the premise of ensuring the observation of more than 50 degrees. The problem of the visual angle of stereoscopic display narrow and small receive the restriction of single viewing distance is solved, rationally set up the quantity that shows the field of vision, guarantee stereoscopic image's display effect and resolution ratio.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A stereoscopic display apparatus, comprising: the device comprises a display module, an eye tracking module and a calculation module;
the human eye tracking module is used for acquiring human eye position information;
the calculation module is respectively in communication connection with the eye tracking module and the display module, and is used for receiving the eye position information and determining a display visual field according to the eye position information and the position information of the display module; the display views comprise left eye display views and right eye display views, the left eye display views comprise at least a left eye primary view, a first left eye auxiliary view and a second left eye auxiliary view, and the right eye display views comprise at least a right eye primary view, a first right eye auxiliary view and a second right eye auxiliary view; in a first direction, the first left-eye auxiliary view and the second left-eye auxiliary view are respectively located on both sides of the left-eye main view, and the first right-eye auxiliary view and the second right-eye auxiliary view are respectively located on both sides of the right-eye main view; the first direction is parallel to a direction in which the left eye points to the right eye;
the computing module is further configured to determine the emergence information of the display module according to the display view;
the display module is used for emitting according to the emitting information.
2. The stereoscopic display apparatus according to claim 1, wherein the left-eye display views include a left-eye main view, a first left-eye auxiliary view, and a second left-eye auxiliary view, and the emission information corresponding to the left-eye main view, the first left-eye auxiliary view, and the second left-eye auxiliary view is the same;
the right-eye display visual field comprises a right-eye main visual field, a first right-eye auxiliary visual field and a second right-eye auxiliary visual field, and emergent information corresponding to the right-eye main visual field, the first right-eye auxiliary visual field and the second right-eye auxiliary visual field is the same.
3. The stereoscopic display apparatus according to claim 1, wherein the display module comprises a display and a light guide assembly, the light guide assembly is located at a light exit side of the display, and display information of the display exits through the light guide assembly;
the display comprises a plurality of display units, each of which comprises a plurality of display pixel groups;
the light guide assembly comprises a plurality of light guide elements, the light guide elements correspond to the display units one by one, and the vertical projection of the light guide elements on the plane of the display is at least partially overlapped with the display units;
the computing module is used for determining display information of the display unit according to the display visual field; in the same view field, the display information of different display units is different.
4. The stereoscopic display apparatus according to claim 3, wherein, in the first direction, an extension dimension of the light guide element is the same as an extension dimension of the display unit corresponding thereto.
5. The stereoscopic display apparatus according to claim 1, wherein the display module comprises a display and a light guide assembly, the light guide assembly is located at a light exit side of the display, and display information of the display exits through the light guide assembly;
the display comprises a plurality of display units, each of which comprises a plurality of display pixel groups;
the light guide assembly comprises a plurality of light guide elements, the light guide elements correspond to the display units one by one, and the vertical projection of the light guide elements on the plane of the display is at least partially overlapped with the display units;
the calculation module is configured to determine, according to the display view, an extension size of the light guide element in the first direction, where, in the same view, the extension sizes of the light guide elements corresponding to different display units in the first direction are different.
6. The stereoscopic display apparatus according to claim 5, wherein a vertical projection of the light guide element on a plane of the display is located within a coverage of the display unit.
7. The stereoscopic display apparatus according to claim 6, wherein along the first direction, the extension dimension width b of the light guide element satisfies:
wherein n is the number of display pixel groups included in the first direction by the display unit corresponding to the light guide element; p is the extension size of the display pixel group in the first direction; v is a width of each of the display views in the first direction.
8. The stereoscopic display apparatus according to claim 3 or 5, wherein a distance g between the light-emitting surface of the display and the light guide element satisfies:
wherein p is an extension of the display pixel group in the first direction; d is the lens center and the person of the light guide elementA distance between the eye positions in a second direction, the second direction being perpendicular to the light exit surface of the display; v is a width of each of the display views in the first direction; n ismIs the refractive index of the light guiding element.
9. The stereoscopic display apparatus according to claim 3 or 5, wherein the light guide element comprises a lenticular lens or a parallax barrier.
10. The stereoscopic display apparatus according to claim 1, wherein each of the display viewing areas has a width of 20mm to 25mm in the first direction.
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